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Describe the physical mechanism that causes pulsations in Cepheid variables.
Quarterly Payments
Payments made once every three months, often used in the context of loans or investment returns.
Compounded Annually
A method of interest calculation where interest is added to the principal once a year.
Accumulate
To gather or collect, often a gradual increase of items or value over time.
Invest
The act of allocating resources, usually money, with the expectation of generating an income or profit.
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